"I am not going to answer any questions as to my association, my philosophical or religious beliefs or my political beliefs, or how I voted in any election, or any of these private affairs. I think these are very improper questions for any American to be asked, especially under such compulsion as this."
He was convicted; the conviction was overturned in 1962. He didn't do much jail time - I'm thinking it was only one day - but it killed his performing career and his family went hungry for awhile.